Brianezi G, Handel AC, Schmitt JV, Miot LD, Miot HA Changes in nuclear morphology and chromatin texture of basal keratinocytes in melasma. J Eur Acad Dermatol Venereol. 2015 Apr;29(4):809-12. doi: 10.1111/jdv.12453. Epub 2014 Mar 14.
Handel AC, Miot LD, Miot HA Melasma: a clinical and epidemiological review. An Bras Dermatol. 2014 Sep-Oct;89(5):771-82. Review.
Kong SH, Suh HS, Choi YS Treatment of Melasma with Pulsed-Dye Laser and 1,064-nm Q-Switched Nd:YAG Laser: A Split-Face Study. Ann Dermatol. 2018 Feb;30(1):1-7. doi: 10.5021/ad.2018.30.1.1. Epub 2017 Dec 26.
Majid I, Haq I, Imran S, Keen A, Aziz K, Arif T Proposing Melasma Severity Index: A New, More Practical, Office-based Scoring System for Assessing the Severity of Melasma. Indian J Dermatol. 2016 Jan-Feb;61(1):39-44. doi: 10.4103/0019-5154.174024.
Moubasher AE, Youssef EM, Abou-Taleb DA Q-switched Nd: YAG laser versus trichloroacetic acid peeling in the treatment of melasma among Egyptian patients. Dermatol Surg. 2014 Aug;40(8):874-82. doi: 10.1097/DSS.0000000000000065.
Interventional studies are often prospective and are specifically tailored to evaluate direct impacts of treatment or preventive measures on disease.
Observational studies are often retrospective and are used to assess potential causation in exposure-outcome relationships and therefore influence preventive methods.
Expanded access is a means by which manufacturers make investigational new drugs available, under certain circumstances, to treat a patient(s) with a serious disease or condition who cannot participate in a controlled clinical trial.
Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.
Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.
